| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be estimated that [art] | 90 |
|
| 2 | it be estimated that [art] | 90 |
|
| 3 | it be estimated that the | 75 |
|
| 4 | it be estimated that the | 75 |
|
| 5 | it is estimated that [art] | 49 |
|
| 6 | it was estimated that [art] | 38 |
|
| 7 | it be estimated that a | 10 |
|
| 8 | it be estimated that a | 9 |
|
